A kind of industrial organic solid waste processing method

Abstract

This application discloses a method for treating industrial organic solid waste, which includes the following steps: S1. Shuttle kiln pyrolysis: put solid waste into a miniature pyrolysis tank, heat the solid waste through the shuttle kiln, and the organic matter in the solid waste is directly Volatilize or evaporate through high-temperature cracking; S2, cooling and dust removal: pass the pyrolysis gas into the cooling and dust removal system, and recover the base oil in the pyrolysis gas; S3, condensation purification: input the pyrolysis gas after cooling and dust removal into the condensation purification system, Recover the liquid organic matter and gaseous organic matter in the pyrolysis gas step by step; S4. Unloading: After the pyrolysis is completed, remove the kiln car, unload the miniature pyrolysis tank whose internal solid waste has been pyrolyzed, and install the next batch to be heated. A miniature pyrolysis tank for decomposing solid waste for the next batch of pyrolysis. This application makes the pyrolysis of solid waste containing organic pollutants no longer limited to rotary kiln pyrolysis, avoids dynamic seals, minimizes high-temperature oil and gas cavities, and avoids accidents during treatment.

Description

technical field [0001] The application relates to the technical field of pyrolysis treatment of solid waste containing organic pollutants in environmental protection, and specifically relates to a treatment method for industrial organic solid waste. Background technique [0002] Industrial solid wastes containing organic pollutants are mostly hazardous wastes. For example, oily drilling cuttings and oily sludge in the petroleum industry belong to HW08 hazardous wastes, and tar residue in the coal chemical industry belongs to HW11 hazardous wastes. [0003] Through the pyrolysis treatment technology, the organic components such as crude oil and tar in the waste are heated, evaporated, cracked and gasified, separated from the solid phase material, and then condensed to recover the base oil, and the remaining solid phase residue meets the discharge standard. Pyrolysis technology completely transforms hazardous waste into industrial raw materials and industrial fuels with indust...

AI Technical Summary

Problems solved by technology

The physical properties of the material change from high solid-containing liquid phase to slime, dry powder, hard lump, etc., and the physical state also changes gradually from liquid to solid during the reprocessing process. Therefore, the dry pyrolysis technology represented by rotary kiln and double blades , there is a fundamental flaw in the control of the material movement during the process, and at the same time, the relatively small heat transfer area meets the heat conduction inertia of the solid material and the result is inefficiency

[0004] Waste materials such as highly oily sludge and tar residue, especially high asphalt sludge, are very viscous during the treatment process, and coking and agglomeration are not conducive to the movement of materials, causing huge damage during the operation of conventional rotary kiln thermal desorption equipment. Trouble has become a major defect in the operation of rotary kiln equipment, and has become the bottleneck of rotary kiln pyrolysis technology for decades

At the same time, the rotary kiln technology has disadvantages such as organic gas leakage, serious dust, low treatment efficiency, and unstable treatment effect.

[0005] Theoretically, kilns other than rotary kilns can solve the above-mentioned problems of rotary kilns; however, actual research shows that when other kilns are used to pyrolyze solid waste containing organic pollutants, there is a problem of inability to burn through, that is, after sintering The solid waste in the middle of the kiln still cannot meet the standard; even if the pyrolysis temperature is increased and the pyrolysis time is extended at all costs, the problem of incomplete combustion is still difficult to solve

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